CN208754275U - A kind of anti-interference radio-frequency unit - Google Patents
A kind of anti-interference radio-frequency unit Download PDFInfo
- Publication number
- CN208754275U CN208754275U CN201821118414.4U CN201821118414U CN208754275U CN 208754275 U CN208754275 U CN 208754275U CN 201821118414 U CN201821118414 U CN 201821118414U CN 208754275 U CN208754275 U CN 208754275U
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- filter
- amplifier
- beidou
- signal
- amplifiers
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Abstract
The utility model discloses a kind of anti-interference radio-frequency units, it includes baseband processor, and the input terminal of baseband processor is connected with the anti-interference down coversion channel of four groups of Beidou B3 signals, clock lane, the signal low noise amplification channel Beidou B1 and L1 and Beidou S signal low noise amplification channel respectively；The output end of baseband processor is connected with Beidou L signal low noise amplification channel.The utility model can receive big-dipper satellite, GPS and Glonass downlink signal, and demodulate and send to Base-Band Processing in the case where there is the strongly disturbing situation of electromagnetism in outside；Pumping signal is received, and is amplified to antenna, Xiang Beidou satellite launch uplink signal；Stable clock signal is provided to Base-Band Processing.Utility model works frequency range is more, high reliablity, easy to maintain, versatility and strong antijamming capability.
Description
Technical field
The utility model relates to field of radio frequency communication, and in particular to a kind of anti-interference radio-frequency unit.
Background technique
Radio communication has become a part in daily life, and communication quality will significantly influence the daily life of people
One of an important factor for living, and radio frequency interference is always influence radio communication quality, the existing anti-interference energy of frequency communication devices
Power is poor, it is difficult to guarantee to keep working normally in the environment there are interference signal.
Utility model content
For above-mentioned deficiency in the prior art, a kind of anti-interference radio-frequency unit provided by the utility model solves existing
The problem of frequency communication devices poor anti jamming capability.
In order to achieve the above object of the invention, the technical solution adopted in the utility model are as follows:
A kind of anti-interference radio-frequency unit is provided comprising baseband processor, the input terminal of baseband processor respectively with four groups
The anti-interference down coversion channel of Beidou B3 signal, clock lane, the signal low noise amplification channel Beidou B1 and L1 and Beidou S signal are low
Noise amplification channel is connected；The output end of baseband processor is connected with Beidou L signal low noise amplification channel；
Every group of anti-interference down coversion channel of Beidou B3 signal includes sequentially connected Beidou B3 UHF band reception antenna, first
Filter, the first amplifier, the first frequency mixer, second filter, the second amplifier and third filter；Third filter it is defeated
Outlet is connected with the output end of baseband processor；
Clock lane includes being used for phaselocked loop, and an output end of phaselocked loop passes through low-pass filter and baseband processor
Input terminal is connected, and the another output of phaselocked loop is separately connected first in every group of anti-interference down coversion channel of Beidou B3 signal
The input terminal of frequency mixer；
Beidou B1 and L1 signal low noise amplification channel includes sequentially connected Beidou B1 and L1 UHF band reception antenna, the 4th
Filter, third amplifier, the 4th amplifier and the 5th filter, the output end of the 5th filter and the input of baseband processor
End is connected；
Beidou S signal low noise amplification channel includes sequentially connected Beidou S UHF band reception antenna, the 6th filter,
Five amplifiers, the 6th amplifier, the 7th filter and the 7th amplifier, the output end of the 7th amplifier and baseband processor it is defeated
Enter end to be connected；
Beidou L signal low noise amplification channel includes sequentially connected 8th filter, the 8th amplifier, the 9th filtering
Device, the 9th amplifier, the tenth amplifier, the tenth filter and Beidou L frequency range transmitting antenna, the input terminal and base of the 8th filter
The output end of provided with processor is connected.
Further, first filter is -0.5dB filter；First amplifier is+32.5 dB amplifiers；First mixing
Device is -6.5 dB frequency mixers；Second filter is -2 dB filters；Second amplifier is+22 dB amplifiers；Third filter
For -2.5 dB filters；4th filter is -0.5 dB filter；Third amplifier is+21 dB amplifiers；4th amplifier
For+24 dB amplifiers；5th filter is -2.5 filters；6th filter is -0.5 dB filter；5th amplifier be+
16 dB amplifiers；6th amplifier is+16 dB amplifiers；7th filter is -2.5 filters；7th amplifier is+17
DB amplifier；8th filter is -2 dB filters；8th amplifier is+18 dB amplifiers；9th filter is -2 dB filter
Wave device；9th amplifier is+16 dB amplifiers；Tenth amplifier is+15 dB amplifiers；Tenth filter is -2 dB filtering
Device.
The utility model has the following beneficial effects: the utility model can receive north in the case where there is the strongly disturbing situation of electromagnetism in outside
Struggle against satellite, GPS and Glonass downlink signal, and demodulates and send to Base-Band Processing；Pumping signal is received, and is amplified to antenna, northwards
Struggle against satellite launch uplink signal；Stable clock signal is provided to Base-Band Processing.Utility model works frequency range is more, reliability
High, easy to maintain, versatility and strong antijamming capability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all utilize the innovation and creation of the utility model design in the column of protection.
As shown in Figure 1, the anti-interference radio-frequency unit includes baseband processor, the input terminal of baseband processor respectively with four groups
The anti-interference down coversion channel of Beidou B3 signal, clock lane, the signal low noise amplification channel Beidou B1 and L1 and Beidou S signal are low
Noise amplification channel is connected；The output end of baseband processor is connected with Beidou L signal low noise amplification channel；
Every group of anti-interference down coversion channel of Beidou B3 signal includes sequentially connected Beidou B3 UHF band reception antenna, first
Filter, the first amplifier, the first frequency mixer, second filter, the second amplifier and third filter；Third filter it is defeated
Outlet is connected with the output end of baseband processor；
Clock lane includes being used for phaselocked loop, and an output end of phaselocked loop passes through low-pass filter and baseband processor
Input terminal is connected, and the another output of phaselocked loop is separately connected first in every group of anti-interference down coversion channel of Beidou B3 signal
The input terminal of frequency mixer；
Beidou B1 and L1 signal low noise amplification channel includes sequentially connected Beidou B1 and L1 UHF band reception antenna, the 4th
Filter, third amplifier, the 4th amplifier and the 5th filter, the output end of the 5th filter and the input of baseband processor
End is connected；
Beidou S signal low noise amplification channel includes sequentially connected Beidou S UHF band reception antenna, the 6th filter,
Five amplifiers, the 6th amplifier, the 7th filter and the 7th amplifier, the output end of the 7th amplifier and baseband processor it is defeated
Enter end to be connected；
Beidou L signal low noise amplification channel includes sequentially connected 8th filter, the 8th amplifier, the 9th filtering
Device, the 9th amplifier, the tenth amplifier, the tenth filter and Beidou L frequency range transmitting antenna, the input terminal and base of the 8th filter
The output end of provided with processor is connected.
First filter is -0.5dB filter；First amplifier is+32.5 dB amplifiers；First frequency mixer is -6.5
DB frequency mixer；Second filter is -2 dB filters；Second amplifier is+22 dB amplifiers；Third filter is -2.5 dB
Filter；4th filter is -0.5 dB filter；Third amplifier is+21 dB amplifiers；4th amplifier is+24 dB
Amplifier；5th filter is -2.5 filters；6th filter is -0.5 dB filter；5th amplifier is that+16 dB are put
Big device；6th amplifier is+16 dB amplifiers；7th filter is -2.5 filters；7th amplifier is+17 dB amplification
Device；8th filter is -2 dB filters；8th amplifier is+18 dB amplifiers；9th filter is -2 dB filters；
9th amplifier is+16 dB amplifiers；Tenth amplifier is+15 dB amplifiers；Tenth filter is -2 dB filters.
In one embodiment of the utility model, the input frequency in every group of anti-interference down coversion channel of Beidou B3 signal is equal
For 1268.52MHz, the external timing signal for inputting phaselocked loop is 100MHz, and phaselocked loop is exported to the local oscillator frequency of the first frequency mixer
Rate is 1222MHz, and clock reference frequency is 62MHz.The local oscillation signal that frequency is 1222MHz is used for anti-with every group of Beidou B3 signal
The input signal in interference down coversion channel generates the intermediate-freuqncy signal of 46.52MHz after being mixed.
Following index may be implemented in the utility model:
1) struggle against the anti-interference down coversion channel overall gain of B3 signal in 4 north of a road: 42dB ± 2dB, gain ranging is fine, and index reaches
To fancy grade；
2) struggle against the anti-interference down coversion channel noise coefficient of B3 signal in 4 north of a road :≤1.5dB, noise coefficient very little, index reach
Fancy grade；
3) struggle against the anti-interference down coversion channel three dB bandwidth of B3 signal in 4 north of a road: >=19MHz, index generally in 20 ~ 21MHz, refer to
It marks optimal；
4) struggle against the anti-interference down coversion channel gain consistency of B3 signal in 4 north of a road :≤1.5dB, passage consistency is fine, index
It is optimal；
5) struggle against the anti-interference down coversion inter-channel phase consistency of B3 signal in 4 north of a road :≤10, ° phase equalization is fine, index
It is optimal；
6) struggle against the anti-interference down coversion interchannel isolation of B3 signal in 4 north of a road: >=65, isolation is fine, and index is optimal
Grade；
7) struggle against the anti-interference down coversion interchannel Out-of-band rejection of B3 signal in 4 north of a road: >=60, rejection ability is strong, and index reaches most
Top grade；
8) struggle against the anti-interference down coversion channel inband flatness of B3 signal in 4 north of a road :≤1.5dB ± 8M, inband flatness is fine,
Index is optimal；
9) clock lane frequency temperature: index request is fully achieved in≤± 10Hz, frequency stability, and index is optimal；
10) Beidou B1 and L1 signal low noise amplification channel gain: 40dB ± 2dB, gain ranging is fine, and index reaches most
Top grade；
11) Beidou B1 and L1 signal low noise amplification channel noise coefficient :≤1.5dB, noise coefficient very little, index reach
Fancy grade；
12) Beidou S signal low noise amplification channel gain: 40dB ± 2dB, gain ranging is fine, and index is optimal grade；
13) Beidou S signal low noise amplification channel noise coefficient :≤1.8dB, noise coefficient very little, index are optimal
Grade；
14) Beidou L signal low noise amplification channel emission power: 37.5 ± 1dBm, power bracket very little, index have reached
Fancy grade.
The utility model can be used for Vehicular satellite positioning, is handled and is realized to B3 frequency point signal by anti-interference radiofrequency signal
Amplification, down coversion and the power amplification to RD-L frequency point；To RD-S low noise amplification, to B1L1 low noise amplification；It is simultaneously to set
Standby internal signal processing provides stable clock signal.
In conclusion the utility model can in the case where there is the strongly disturbing situation of electromagnetism in outside, receive big-dipper satellite, GPS and
Glonass downlink signal, and demodulate and give to Base-Band Processing；Pumping signal is received, and is amplified to antenna, on Xiang Beidou satellite launch
Row signal；Stable clock signal is provided to Base-Band Processing.Utility model works frequency range is more, high reliablity, easy to maintain, logical
With property and strong antijamming capability.
Claims (2)
1. a kind of anti-interference radio-frequency unit, it is characterised in that: including baseband processor, the input terminal of the baseband processor is distinguished
With the anti-interference down coversion channel of four groups of Beidou B3 signals, clock lane, the signal low noise amplification channel Beidou B1 and L1 and Beidou S
Signal low noise amplification channel is connected；The output end of the baseband processor is connected with Beidou L signal low noise amplification channel
It connects；
The anti-interference down coversion channel of Beidou B3 signal described in every group includes sequentially connected Beidou B3 UHF band reception antenna, first
Filter, the first amplifier, the first frequency mixer, second filter, the second amplifier and third filter；The third filter
Output end be connected with the output end of the baseband processor；
The clock lane includes being used for phaselocked loop, and an output end of the phaselocked loop passes through low-pass filter and the base band
The input terminal of processor is connected, and the another output of the phaselocked loop is separately connected every group of anti-interference lower change of Beidou B3 signal
The input terminal of first frequency mixer in frequency channel；
The Beidou B1 and L1 signal low noise amplification channel include sequentially connected Beidou B1 and L1 UHF band reception antenna, the 4th
Filter, third amplifier, the 4th amplifier and the 5th filter, the output end of the 5th filter and the Base-Band Processing
The input terminal of device is connected；
Beidou S signal low noise amplification channel includes sequentially connected Beidou S UHF band reception antenna, the 6th filter,
At five amplifiers, the 6th amplifier, the 7th filter and the 7th amplifier, the output end of the 7th amplifier and the base band
The input terminal of reason device is connected；
The Beidou L signal low noise amplification channel includes sequentially connected 8th filter, the 8th amplifier, the 9th filtering
Device, the 9th amplifier, the tenth amplifier, the tenth filter and Beidou L frequency range transmitting antenna, the input terminal of the 8th filter
It is connected with the output end of the baseband processor.
2. anti-interference radio-frequency unit according to claim 1, it is characterised in that: the first filter is -0.5dB filtering
Device；First amplifier is+32.5 dB amplifiers；First frequency mixer is -6.5 dB frequency mixers；Second filtering
Device is -2 dB filters；Second amplifier is+22 dB amplifiers；The third filter is -2.5 dB filters；Institute
Stating the 4th filter is -0.5 dB filter；The third amplifier is+21 dB amplifiers；4th amplifier is+24
DB amplifier；5th filter is -2.5 filters；6th filter is -0.5 dB filter；Described 5th puts
Big device is+16 dB amplifiers；6th amplifier is+16 dB amplifiers；7th filter is -2.5 filters；Institute
Stating the 7th amplifier is+17 dB amplifiers；8th filter is -2 dB filters；8th amplifier is+18 dB
Amplifier；9th filter is -2 dB filters；9th amplifier is+16 dB amplifiers；Tenth amplification
Device is+15 dB amplifiers；Tenth filter is -2 dB filters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821118414.4U CN208754275U (en) | 2018-07-17 | 2018-07-17 | A kind of anti-interference radio-frequency unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821118414.4U CN208754275U (en) | 2018-07-17 | 2018-07-17 | A kind of anti-interference radio-frequency unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208754275U true CN208754275U (en) | 2019-04-16 |
Family
ID=66057225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821118414.4U Expired - Fee Related CN208754275U (en) | 2018-07-17 | 2018-07-17 | A kind of anti-interference radio-frequency unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208754275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061358A (en) * | 2022-06-20 | 2022-09-16 | 北京国卫星通科技有限公司 | Anti-cheating anti-interference alarming Beidou time service device |
-
2018
- 2018-07-17 CN CN201821118414.4U patent/CN208754275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115061358A (en) * | 2022-06-20 | 2022-09-16 | 北京国卫星通科技有限公司 | Anti-cheating anti-interference alarming Beidou time service device |
| CN115061358B (en) * | 2022-06-20 | 2023-01-31 | 北京国卫星通科技有限公司 | Anti-cheating anti-interference alarming Beidou time service device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 Termination date: 20200717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |